Follow the 20/20/20 Rule for Your Eyes
Just like the rest of your body your eyes need a break too! Throughout the day give your eyes a break by forcing them to focus on something other than your computer screen. Follow the 20/20/20 rule. Every 20 minutes, take your eyes off your computer and look at something 20 feet away for at least 20 seconds. It's also reasonable to take a break every 15 to 30 minutes for one to three minutes.
Do other work, such as phone calls or filing, during this time. Try to stand up and move around at least once every hour or so. If possible, lean back and close your eyes for a few moments.
If you wear glasses or contacts ask your doctor if you may benefit from a pair of computer eyeglasses. Most lenses are fitted for distance or reading print and may not be optimal for computer work. Computer glasses feature lenses designed specifically for computer work and may be a worthwhile investment.